TY - JOUR
T1 - Tribological performance evaluation and sensitivity analysis of piston ring lubricating film with deformed cylinder liner
AU - Usman, Ali
AU - Ahmad Cheema, Taqi
AU - Woo Park, Cheol
N1 - Publisher Copyright:
© IMechE 2015.
PY - 2015/12/1
Y1 - 2015/12/1
N2 - The interface between piston ring and cylinder liner is lubricated with an oil film to improve wear resistance and operating life of the engine. The high combustion pressure, variable loadings, manufacturing errors, and thermal distortions in the engine cylinder deform the cylinder liner, thus making a significant effect on the lubricant performance. To investigate the effects of cylinder liner deformation on the piston ring lubrication, a 2D model of elastohydrodynamic lubrication under fully flooded conditions was considered. Various elliptically deformed profiles of the cylinder liner were tested to evaluate conformability, lubricating film thickness, friction, power loss, and lubrication flow rate for a complete four-stroke engine cycle. Comparative analysis of the simulation results was conducted to evaluate the dependency of engine performance on deformed bore shape. Results showed that the lubricating film thickness and engine performance parameters strongly depend on the cylinder liner shape and the degree of distortion.
AB - The interface between piston ring and cylinder liner is lubricated with an oil film to improve wear resistance and operating life of the engine. The high combustion pressure, variable loadings, manufacturing errors, and thermal distortions in the engine cylinder deform the cylinder liner, thus making a significant effect on the lubricant performance. To investigate the effects of cylinder liner deformation on the piston ring lubrication, a 2D model of elastohydrodynamic lubrication under fully flooded conditions was considered. Various elliptically deformed profiles of the cylinder liner were tested to evaluate conformability, lubricating film thickness, friction, power loss, and lubrication flow rate for a complete four-stroke engine cycle. Comparative analysis of the simulation results was conducted to evaluate the dependency of engine performance on deformed bore shape. Results showed that the lubricating film thickness and engine performance parameters strongly depend on the cylinder liner shape and the degree of distortion.
KW - Elastohydrodynamic lubrication
KW - cylinder liner deformation
KW - engine performance
KW - film
KW - piston ring
UR - http://www.scopus.com/inward/record.url?scp=84947281883&partnerID=8YFLogxK
U2 - 10.1177/1350650115581029
DO - 10.1177/1350650115581029
M3 - Article
AN - SCOPUS:84947281883
SN - 1350-6501
VL - 229
SP - 1455
EP - 1468
JO - Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology
JF - Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology
IS - 12
ER -